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Finding the Fourth Proportional to 47,940, 66,157.50 and 26,720.61

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Solution

The fourth proportional to 47,940, 66,157.50 and 26,720.61 is: 36,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,940 : 66,157.50 = 26,720.61 : x
  2. Step 2: Convert to fraction form
    47,940/66,157.50 = 26,720.61/x
  3. Step 3: Cross multiply
    47,940x = 66,157.50 × 26,720.61
  4. Step 4: Simplify right side
    47,940x = 1,767,768,756.08
  5. Step 5: Solve for x
    x = 1,767,768,756.08/47,940
  6. Step 6: Final answer
    x = 36,874.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.